Keizo Kusakawa (草川 啓造, Kusakawa Keizō) is a Japanese anime director working for Diomedéa.

Formerly working for Seven Arcs, during his early years at the studio he worked under Akiyuki Shinbō and has since then been also involved in several shows at Shaft. Kusakawa also took over the duties as director of the Lyrical Nanoha series from Shinbō after the latter left Seven Arcs, starting with its second season, Mahou Shoujo Lyrical Nanoha A's. As of 2013, he works for Diomedéa